<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<input type="text" placeholder="员工姓名" id="i1">
<input type="text" placeholder="员工工资" id="i2">
<input type="text" placeholder="员工工作" id="i3">
<input type="button" value="添加" onclick="f()">
<table border="1">
  <caption>员工列表</caption>
    <tr>
        <th>姓名</th>
        <th>工资</th>
        <th>工作</th>
    </tr>
</table>
<script>
    function f() {
        // 1.创建tr
        let tr = document.createElement("tr");
        // 2.创建3个td
        let nameTd = document.createElement("td");
        let salaryTd = document.createElement("td");
        let jobTd = document.createElement("td");
        // 3.得到3个文本框并把3个文本框的值给到3个td
        // let i1 = document.querySelector("#i1");
        // let i2 = document.querySelector("#i2");
        // let i3 = document.querySelector("#i3");
        nameTd.innerText = i1.value;
        salaryTd.innerText = i2.value;
        jobTd.innerText = i3.value;
        //4. 把td装进tr
        tr.append(nameTd,salaryTd,jobTd);
        //5. 得到table  并把tr装进table
        let table = document.querySelector("table");
        table.append(tr);

    }
</script>
</body>
</html>